Home / 320,683.81-442,513.51-217,107.30

Finding the Fourth Proportional to 320,683.81, 442,513.51 and 217,107.30

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Solution

The fourth proportional to 320,683.81, 442,513.51 and 217,107.30 is: 299,587.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,683.81 : 442,513.51 = 217,107.30 : x
  2. Step 2: Convert to fraction form
    320,683.81/442,513.51 = 217,107.30/x
  3. Step 3: Cross multiply
    320,683.81x = 442,513.51 × 217,107.30
  4. Step 4: Simplify right side
    320,683.81x = 96,072,912,284.09
  5. Step 5: Solve for x
    x = 96,072,912,284.09/320,683.81
  6. Step 6: Final answer
    x = 299,587.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.